Texas Instruments TPS72215DBVTG4

Overview

TPS72215DBVTG4 from Texas Instruments is a 1.5-V fixed-output, 50-mA low-dropout linear regulator in a 5-pin SOT-23 (DBV) package. It operates from 1.8 V to 5.5 V input, delivers 50 mV typical dropout at full load, supports 0.1-µF ceramic output capacitance, and draws only 85 µA quiescent current-enabling direct two-AAA-battery operation in portable microcontroller power rails.

For engineers reviewing the TPS72215DBVTG4 datasheet, TPS72215DBVTG4 pinout, TPS72215DBVTG4 application, or TPS72215DBVTG4 equivalent, key selection criteria include its 1.5-V fixed output, ultra-low 1.8-V minimum input voltage, sub-1-µA shutdown current, thermal/overcurrent protection, and compatibility with miniature 0.1-µF ceramic capacitors for space-constrained battery-powered designs.

Technical Context

The TPS72215DBVTG4 uses a PMOS pass element enabling low dropout and operation down to 1.8 V input-critical for single- or dual-cell alkaline/Li-ion systems. Its internal compensation stabilizes regulation across 1.8–5.5 V input and 0–50 mA load with only 0.1 µF output capacitance, eliminating need for larger electrolytics.

Enable (EN) logic control allows <1 µA shutdown current; thermal shutdown activates at 170°C with 20°C hysteresis, and current limiting engages near 350 mA. The NC/FB pin is unconnected in fixed-output variants, distinguishing it from the adjustable TPS72201.

Key Specifications

Pinout & Package

TPS72215DBVTG4 is housed in a RoHS-compliant 5-pin SOT-23 (DBV) package measuring 3.0 mm × 3.0 mm × 1.45 mm max height, optimized for high-density portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS72215DBVR, TPS72215DBVTG4 offers identical performance in a smaller reel format ideal for evaluation and pilot builds; versus TPS71715DCKR, it trades slightly higher IQ for significantly smaller output capacitance-reducing total solution size by >50% in area-constrained portable designs.

Availability

TPS72215DBVTG4 is available at Aetrix Electronics and suitable for portable communication devices, battery-powered medical wearables, and PCMCIA card power management requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for TPS72215DBVTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with decades of LDO design expertise.

The TPS722xx family was engineered specifically for ultra-low-input-voltage, space-constrained portable applications-delivering regulated 1.5-V to 1.8-V rails from single- or dual-cell batteries while minimizing external component count.

FAQ

What is the minimum input voltage required for stable operation of the TPS72215DBVTG4?

The TPS72215DBVTG4 requires a minimum input voltage of 1.8 V for stable regulation. This value is defined by both the absolute minimum operating voltage and the dropout condition: at 50 mA load, the dropout is 50 mV, so the lowest viable input is 1.5 V + 0.05 V = 1.55 V-but the device specification mandates ≥1.8 V to ensure full functionality across temperature and process variation. Hence, TPS72215DBVTG4 reliably powers systems down to two depleted AAA batteries (~1.8 V).

Does the TPS72215DBVTG4 require an external feedback resistor network?

No, the TPS72215DBVTG4 is a fixed-output 1.5-V regulator and does not require external feedback resistors. Pin 4 (NC/FB) is internally unconnected and must remain floating-no connection to ground or any other node is permitted. This distinguishes it from the adjustable TPS72201, which uses the same pin as FB and requires an external resistor divider.

Can the TPS72215DBVTG4 be used with ceramic capacitors smaller than 1 µF?

Yes, the TPS72215DBVTG4 is specifically designed to be stable with a minimum 0.1-µF ceramic output capacitor-verified across input voltages (1.8–5.5 V) and load currents (0–50 mA). This eliminates the need for larger, more expensive, or physically larger 1-µF+ capacitors commonly required by competing LDOs, making TPS72215DBVTG4 ideal for miniaturized portable PCBs.

What protection features are integrated into the TPS72215DBVTG4?

The TPS72215DBVTG4 integrates three key protections: (1) thermal shutdown triggers at 170°C junction temperature with 20°C hysteresis for automatic recovery; (2) current limiting activates near 350 mA to prevent catastrophic overload; and (3) reverse-current conduction via the PMOS body diode safely handles VIN < VOUT conditions during power-down. These features eliminate need for external protection circuitry in most portable applications.

Is the TPS72215DBVTG4 pin-compatible with other members of the TPS722xx family?

Yes, all TPS722xx variants-including TPS72215DBVTG4, TPS72216DBVT, and TPS72218DBVT-share identical 5-pin SOT-23 (DBV) packaging and pinout (IN, GND, EN, NC/FB, OUT). This allows drop-in replacement across 1.5-V, 1.6-V, and 1.8-V fixed-output versions without PCB layout changes, simplifying voltage-scaling during design iteration or qualification.